/Engine/Source/Editor/UnrealEd/Public/FbxImporter.h
Fill theFbxNodeInfostructure recursively to reflect the FbxNode hierarchy. The result will be an array sorted with the parent first
void TraverseHierarchyNodeRecursively ( [FbxSceneInfo](API\Editor\UnrealEd\FbxSceneInfo) & SceneInfo, FbxNode * ParentNode, [FbxNodeInfo](API\Editor\UnrealEd\FbxNodeInfo) & ParentInfo )